/****************************************************/
/* File: main.c                                     */
/* Main program for TINY compiler                   */
/* Compiler Construction: Principles and Practice   */
/* Kenneth C. Louden                                */
/****************************************************/

#include "globals.h"

/* set NO_PARSE to TRUE to get a scanner-only compiler */
#define NO_PARSE FALSE

#include "util.h"
#if NO_PARSE
#include "scan.h"
#else
#include "parse.h"
#endif

/* allocate global variables */
int lineno = 0;
FILE * source;
FILE * listing;
FILE * code;

/* allocate and set tracing flags */
int EchoSource = TRUE;
int TraceScan = TRUE;
int TraceParse = TRUE;

int Error = FALSE;

main(int argc, char * argv[]) {
	TreeNode * syntaxTree;
	char pgm[120]; /* source code file name */
	if (argc != 2) {
		fprintf(stderr, "usage: %s <filename>\n", argv[0]);
		system("pause");
		exit(1);
	}
	strcpy(pgm, argv[1]);
	if (strchr(pgm, '.') == NULL)
		strcat(pgm, ".tny");
	source = fopen(pgm, "r");
	if (source == NULL) {
		fprintf(stderr, "File %s not found\n", pgm);
		system("pause");
		exit(1);
	}
	listing = stdout; /* send listing to screen */
	fprintf(listing, "\nTINY COMPILATION: %s\n", pgm);
#if NO_PARSE
	while (getToken() != ENDFILE);
#else
	syntaxTree = parse();
	if (TraceParse) {
		fprintf(listing, "\nSyntax tree:\n");
		printTree(syntaxTree);
	}
#endif
	fclose(source);
	system("pause");
	return 0;
}
